Door and glazing retainer.



E. A; HAWTHORNE. DOOR AND GLAZING RETAINER. APPLICATION FlLEb AUG. I. 1916.

Patentvd Feb. 6, 1917.

121 728711301 Eilsworih fllik :wihorae UNITED sTAtrns PATENT OFFICE.

ELLSWORTH A. I-IAWTHOBN E, OF BRIDGEPORT, CONNECTICUT.

DOOR AND GLAZING RETAINER.

Specification of Letters Patent.

P atented Feb. 6, 1917.

Application filed August 1, 1916. Serial No. 112,59 8.

provide such a device which will firmly and door or bezel of the lamp.

position on the In the embodiment of the invention illustrated the device also serves as a means for retaining the door itself in position.'

My invention will be best understood by reference to the following description of one illustrative embodiment of my invention, taken in connection with the accompanying drawings, wherein:

Figure 1, 1s a central vertical section securely lock the glazing in through a lamp having my invention applied thereto;

Fig. 2 is a fragmentary top plan view Fig; 1; I i Fig. 3 is a view similar to Fig. 2 with the door or bezel removed;

Fig. 4 is a plan view of one of the parts; and

Fig. 5 is a view of the retaining device on a smaller scale.

Referring to Fig. 1, I have there shown the lamp as embodying a suitable casing 3 closed in front by the bezel or door 5, having a. suitable seat 7 to receive a glazing 9 placed interiorly thereof. The fiange of the door frame 5 may. fit over the front of the casing, as shown.

To retain the glazing in position against its seat 7 I preferably provide the door with a groove 11 adjacent such seat which receives the retaining ring 13 having a bead or channel 15 opening. inwardly and adapted to seat in the'groove 1i. and the inwardly extending or frusto-conical flange 17 adapted to extend over the edge of the glazing and bearing against the same. flange 17 may be somewhat springy so as to bear resiliently against the glazing 9. The ring 13 may be formed of one or more parts, but I have here shown it (see' Fig. 5) as comprising three segments pivoted together If desired the i at 19 so that the ring may be contracted, as

shown, and easily sat in the groove 11. However, wlthin the scope of myinvention the ring might be a sir gle piece or embody several independent segments orretaining members.

In the embodiine 1t ofthe invention shown the door 5 is secured to the casing 3 by a.

'slot connection, preferably a bayonet slot For this purpose one of the connection. parts, herein the cising 3 is provided with the bayonet slots 2. and the other part such as, the door flange 10 carries the two part clamps 23 hereinai'ter to he more fully referred to. It is ap 'iarent that the door may be placed over the casing 3, the clamps entering the slots 21 and when given a ciro1unferential turn they will enter the circumferential parts of these slots and hold the door on and that hen the clamps are tightened the dooi-"wlllbe firmly locked in place.

The clamps 23 f-arin retaining devices extending through tl e easing 3 and the flange 10 susceptible of. adjusting manipulation from the exterior of the lamp. In the pres ent invention they ire utilized firmly to hold the glazingretainer 13 in position and for adapted to enter and interlock with the head 15, as clearly shown in Fig. 1. It, is apparcut that when tlu door is placed in position' overthe casilig with the shanks of the bolts 25 entering the bayonet slots 21, the

bolts may be joined from the exterior by means of a screwdriver and not only will the nut firmly clamp together the flange of the casing 3 and tl .e flange-9 of the door but they will firmly retain in position the ring 13 whether it is iormed in ,one'piece or is segmental and wil v lock the peripheral bead thereof in position in the groove 11. By these means the door is locked firmly in position and the glazing held solidly against its. seat so that it requires no-paekmg. to exclude moisture or dirt and cannot rattle. 1

Referring to F5 g. 21, it is apparent that the n'uts127 are secured to the wall lamp,

herein the casing ii, at a fixed distance from I i the glazing seat. If the retaining ring 13 is designed so as so be put under eompres sion and'bear resiliently against the glazing, it will be apparent that when it is first adjusted the ends of the nuts will bear against the interior surface of the frustum formed by the retaining ring, and as the screws 23 are adjusted and the hook portions 29 drawn down into engagement with 'the bead 15, not only will the ring he scat- .ed firmly against the interior of the door frame, but it will be, as it were, cammed vlsion for engaging said. membenfor hO1doutwardly and put under compression against the glazing 9. The curved surface of the seating groove 11 may also have a certain camming action as will be well nnderstood by inspection of Fig. 1. Thus the structure disclosed provides means for ex erting both an axial and a radial thrust a g azing on its seat and to hold the ring itself firmly in position against the Wall of invention. I- referred tov them specifically in order that the construction shown might be more readily understood. What I do claim and desire to secure by Letters Patent is 1.'In a lamp a casing, a door having a flange adapted to fit said casing and having a seat for a glazing, a retaining member for holdinga glazing against said seat,-and ad'- justable clamping devices for securing together said flange and casing having pro- 'ing the samein position.

' "2. In a lamp a casin a door havin a flange adapted to'fit sai casing and having a seat for a glazing, a'retaining member for holding a glazing against said seat, and means for securing together said flange and casing comprising two-part screw clamps carried by one of said elements andhaving- I slot connection with the other, one part of said clamps being arranged to engage and hold said member.

I glazing-retaining devices ange'ada'pted to bear on Y 3. In a lamp a casing, adoor adapted to fitsaid casing having a seatfor a glazing and a groove adjacent said s'eat,vone or more each comprising a bead or'channel arranged to seat in said groove and clamping members for securing together said door and easing having hook 4. In a lamp a casing,

seat for a glazing portions adapted to enter channels and hold them in the groove.

flange adapted to fit said casing having a and a groove. adjacent said seat, one or. more" glazing retaining devices each having "a on the glazing and'a. art to seat in said groove, adjustable"mem rs extending from gainst the retaining ring 13 to hold the the glazing and a said beads or- 'a door having a flange adapted to bear said devices through said casing and flange and having slot connection with one of them, said members being susceptible of adjusting manipulation from the exterior of said casing to draw outwardly said retaining devices.

5. In a lamp a casing, a door adapted to fit said casing and having a seat for a glazing, one or more glazing retaining devices each having a flange adapted to bear. on

, said glazing and an exterior, inwardly open= ing bead or channel arranged to seat on the door frame, and clamping members for securing together said door and casing having hook portions adapted to enter said beads or channels and hold said devices seated.

6. In a lamp a casing, a door adapted to fit said casing and. having a seat for a glaz-- ing, one or more glazing retaining devices each having a flange adapted to bear on said glazing and an exterior, inwardly opening head or channel arranged to seat on the door frame, and means for securing together said door and easing comprising two-pi clamps carried by one of said elen': having slot connection with the nth one part of said clamps being formed to interlock with said beads or channels and hold said devices seated. y

-7. .A door-- for alamp having a peripheral flange and a lazing seat, a glazing retaining ring seate on the door flange having a 'fiange to bear against the glazing twopart clamps extending through the door flange and arranged for adjusting manipulation from the exterior thereof, said clamps engaging said ring to press it to its seat.

8. A lamp having an opening and presenting a seat for a glazing adjacent said opening, a glazing on said seat, a retaining device for said glazing to hold the same against said seat, and means associated therewith extending through the wall of the lamp for holding said glazing in place.

9. A lamp having an opening and present ing a seat for a glazin adjacent said opening, 'a glazing on Sta! seat, a retaining device disposed inteig-srly of the lamp. for engaging said glazing to hold it, against its seat, and means associated therewith and extending through the wall of the lamp for positioning the retaining device against the interiorof the lamp wall.

10. A lamp having an opening -nd' p senting a seat for a glazing 'ad acent said opening, a glazing substantially frusto-conical portion, one base on said seat, a retaining device for the glazing having a resi ilent,

of which bears on the glazing, and clamping devices at the opposite base of said portion arranged to hold said device seated against the wall of the lamp with said portion under compression.

11. A lamp comprising a' casing, a. door having a flange adapted to fit said casing and having a seat for a glazing, a retaining device for said glazing peripherally engaging the same, and means associated thsre-- with engaging said casing and said flange and holding the same together;

12, A lamp having, an opening and presenting seat for a giaaing adjacent said opening,- a glazing on said seat, one or-more glazing "retaining denioes each having a flange adapted to bear on said glazing, and

an exteriorinwardly opening bead. arranged to seat on the lamp Wall, and two part screw clamps extending vthrough the lamp wail,

-one part of said .elamps being formed to interlock with said heads and hoid'said devices seated.

13. A lamp having anopening presenting a glazing seatfa .gl'azing'on said seat, a re-" taming ring therefor having a frusto-eomto bear on said cal, resilient portion adapter p the lamp Wall la'zing members carried by at fixed tendmg toward the mter ior of the frustum,

means for moving said members radially outwardly, and means at a base of the finstnm for engagmg said members whereby manipulation of said moving means will seat said ring and tension said resilient portion, a

' 14. A lamphaving an' opening and presenting a seat for a glazing adjacent. said opening, a glazing, a retaining element for holding the same against its seat, and-means apart from theretaining element for urging the latter in one direction'against said distance from said seat and exlight transmitting elemeit and in another direction igainst the lam Wall.

15. A lam having an openmg and presenting a seat for a glazing ad acent said rwall of said shell and bearing against said g member, and means for haldmg the mug 1n place thereagamst comprising dev ces carried by the Wall of the s. 1811 andha-ving a part movable to engage t] 1e ring.

17. In a lamp a casing .a door having a. flange adapted to fit'the easing, anvinterior member, and means 01 positioning the same comprisinga retainingring seated interiorly on. the easing wall and bearing against said member, and means for bolding the ring in place thereagainst'comprising two part clamps extending through the casing and the door flange and having slot connection Withone of them, said'olamps having a part engaging an id positioning the ring.

' In, testimony whereof,

name to this specification have signed my 

